How to Mix Fireclay Mortar

Save

You can increase a mortar's resistance to heat and fire by adding fireclay to the mix. Fireclay, or fire clay, is a type of clay that can withstand extremely high temperatures without breaking down. Fireclay mortar traditionally has been made by adding fireclay to a regular cement mortar mix, often with the addition of lime. But many modern building codes require the use of calcium aluminate instead of cement to make "refractory" mortar, especially in the construction of residential fireplaces.

Things You'll Need

  • Fireclay
  • Sand
  • Lime
  • Calcium aluminate or Portland cement
  • Bucket or wheelbarrow
  • Stirring stick or shovel
  • Add one part fireclay, one part Portland cement, one part lime and three parts sand into a bucket or wheelbarrow, depending on how much mortar you intend to mix. If you are making refractory mortar, use one part aluminum silicate instead of the Portland cement. When using calcium aluminate, make only small batches because the mortar sets quickly.

  • Check the instructions on the Portland cement or calcium aluminate to see how much water you should add to the mix.

  • Add about three-fourths of the specified amount of water to the mix, and stir it in thoroughly. Add more of the water while stirring. Stop adding water when the mix is about the consistency of peanut butter. If you are using calcium aluminate, be ready to begin work immediately, because you only have about 15 minutes before the mortar sets.

References

  • Photo Credit Ablestock.com/AbleStock.com/Getty Images
Promoted By Zergnet

Comments

You May Also Like

  • What Is a Fireclay Sink?

    Top-of-the-line kitchen sinks include apron-fronted fireclay, a clay-based product fused with glaze and fired at extreme temperatures.

  • How to Mix Mortar for Blocks

    If you are doing some do-it-yourself work with concrete blocks, that may require you to mix your own mortar. While it may...

  • How to Build an Outdoor Oven

    Outdoor kitchens have become increasingly popular during the past few years. At the center of the kitchen is usually a barbecue or...

  • Fireclay Sink Repair

    Fireclay is a unique material used to make sinks and tubs. It maintains the appearance of porcelain or ceramic, but because the...

  • How to Make Fireproof Mortar

    Most mortar is fireproof to some extent. The materials of clay, cement, lime and sand are naturally resistant to fire and heat....

  • How to Mix Portland Cement With Sand

    Portland cement is made up of a number of compounds, but primarily consists of limestone and clay. It can be mixed with...

  • How to Make Firebrick Mortar

    When repairing your fireplace, you can avoid the cost of buying a full container of firebrick mortar by mixing your own to...

  • How to Apply Refractory Mortar

    Refractory cement is often used for laying brickwork in high-temperature environments such as fireplaces. Refractory mortar mix consists of Portland cement, silica...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!